排灌机械工程学报2025，Vol.43Issue(3)：217-223,7.DOI:10.3969/j.issn.1674-8530.23.0133
不同叶顶间隙下进口含气率对混输泵做功性能的影响
Effect of inlet gas volume fraction in different tip clearances on work performance of multiphase pump
摘要
Abstract
To investigate the influence of inlet gas volume fraction(IGVF)on the energy conversion dynamic in the flow passage of the multiphase pump under different tip clearances,numerical simula-tions of two-phase flow in the multiphase pump were conducted by using ANSYS CFX software.By studying the dynamic head,static head,power variation,and energy density distribution across diffe-rent sections of the multiphase pump,the energy conversion characteristics in the pump with considera-tion of tip clearances and IGVF were revealed.The research results show that the increase of tip clea-rance has a great impact on the power performance of the impeller of the pump.The maximum operation head of the multiphase pump is about 5 m and 6 m at the axial coefficient of 0.4 under the working con-ditions of tip clearances of 1.0 mm and 1.5 mm,respectively.With the increase of IGVF,the static head of the second half of the impeller decreases gradually,and the pressurizing performance of the impeller decreases.Among them,the static head at the impeller outlet decreases the most significantly,with a maximum decrease of 10.02％.With the increase of IGVF,both the static power and total power in the impeller passage are increased to a certain extent.The increase of tip clearance and IGVF leads to a sig-nificant increase in the area with larger power density in the middle of the passage.The research results can provide some reference for accurately predicting the power performance of multiphase pumps.关键词
多相混输泵/叶顶间隙/进口含气率/做功性能/扬程Key words
multiphase pump/tip clearance/inlet gas volume fraction/work performance/head分类
农业工程引用本文复制引用
肖业祥,刘洁,李海军,陶思佳,史广泰..不同叶顶间隙下进口含气率对混输泵做功性能的影响[J].排灌机械工程学报,2025,43(3):217-223,7.基金项目
国家自然科学基金资助项目(52279088) （52279088）
水圈科学与水利工程全国重点实验室开放研究基金资助项目(sklhse-2022-KY-06,sklhse-2023-E-04) （sklhse-2022-KY-06,sklhse-2023-E-04）
